.cover {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background-color: rgba(0, 0, 0, .7);
    z-index: 100;
}

.actions {
    z-index: 101;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: 400px;
    background-color: #fff;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    overflow-y: auto;
    /* 隐藏滚动条 */
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding-top: 10px;
}

.item {
    height: 70px;
    width: 100%;
    border-bottom: 1px solid #eee;
    text-align: center;
    line-height: 70px;
}